Verify Browser Path and User Data

Oct 13, 2025 by wbrum.org 148 views

Introduction

Thank you for choosing WebUI, a powerful tool for automating web interactions. We appreciate your feedback and are here to help you resolve any issues you may encounter. In this article, we will focus on troubleshooting problems related to using your own browser instance with the Edge browser on Windows 11.

Understanding the Issue

When you select the "Use your existing browser instance" option in WebUI, you may encounter errors, such as the one shown below:

INFO     [agent] 🚀 Starting task: 打开B站
INFO     [src.agent.custom_agent]
📍 Step 1
INFO     [browser] Connecting to remote browser via CDP http://localhost:9222
ERROR    [browser] Failed to initialize Playwright browser: BrowserType.connect_over_cdp: connect ECONNREFUSED ::1:9222
Call log:
  - <ws preparing> retrieving websocket url from http://localhost:9222

This error indicates that the browser instance is not responding or is not accessible via the Chrome DevTools Protocol (CDP) on port 9222.

Troubleshooting Steps

To resolve this issue, follow these steps:

1. Verify Browser Path and User Data

Ensure that the path to the Edge browser executable and the user data directory are correct. You can check the browser path and user data directory by following these steps:

Open the Edge browser settings by typing edge://settings/ in the address bar.
Click on the "Advanced" tab.
Scroll down to the "Reset and clean up Google Chrome" section.
Click on the "Reset and clean up Google Chrome" button.
In the "Reset and clean up Google Chrome" window, click on the "Reset settings" button.
In the "Reset settings" window, click on the "Reset" button.

2. Check for Browser Updates

Ensure that the Edge browser is up-to-date. You can check for updates by following these steps:

Open the Edge browser settings by typing edge://settings/ in the address bar.
Click on the "About Microsoft Edge" tab.
Click on the "Check for updates" button.

3. Disable Browser Extensions

Disable all browser extensions to see if any of them are causing the issue. You can disable extensions by following these steps:

Open the Edge browser settings by typing edge://settings/ in the address bar.
Click on the "Extensions" tab.
Toggle the switch next to each extension to disable it.

4. Reset Browser Settings

Reset the Edge browser settings to their default values. You can reset settings by following these steps:

Open the Edge browser settings by typing edge://settings/ in the address bar.
Click on the "Reset and clean up Google Chrome" tab.
Click on the "Reset settings" button.
In the "Reset settings" window, click on the "Reset" button.

5. Check for Firewall or Antivirus Issues

Check if the firewall or antivirus software is blocking the browser instance. You can check for firewall or antivirus issues by following these steps:

Check the firewall settings to ensure that the browser instance is allowed to communicate with the CDP.
Check the antivirus software settings to ensure that it is not blocking the browser instance.

Conclusion

Using your own browser instance with WebUI can be a powerful way to automate web interactions. However, issues may arise due to incorrect browser path and user data, outdated browser versions, enabled browser extensions, or firewall or antivirus software blocking the browser instance. By following the troubleshooting steps outlined in this article, you should be able to resolve the issue and successfully use your own browser instance with WebUI.

Additional Resources

For more information on using your own browser instance with WebUI, please refer to the following resources:

Introduction

Using your own browser instance with WebUI can be a powerful way to automate web interactions. However, you may have questions about how to set it up, troubleshoot issues, and optimize performance. In this article, we will answer some of the most frequently asked questions (FAQs) about using your own browser instance with WebUI.

Q: What is the "Use your existing browser instance" option in WebUI?

A: The "Use your existing browser instance" option in WebUI allows you to use an existing browser instance instead of launching a new one. This can be useful for automating web interactions that require a specific browser configuration or for reducing the overhead of launching multiple browser instances.

Q: How do I set up my own browser instance with WebUI?

A: To set up your own browser instance with WebUI, follow these steps:

Open the WebUI settings by clicking on the gear icon in the top right corner of the WebUI window.
Click on the "Browser" tab.
Select the "Use your existing browser instance" option.
Enter the path to the browser executable and the user data directory.
Click on the "Save" button.

Q: What are the system requirements for using my own browser instance with WebUI?

A: The system requirements for using your own browser instance with WebUI are:

Windows 10 or later (64-bit)
Edge browser version 80 or later
Chrome DevTools Protocol (CDP) version 1.1 or later
4 GB of RAM or more
2 GB of free disk space or more

Q: How do I troubleshoot issues with my own browser instance?

A: To troubleshoot issues with your own browser instance, follow these steps:

Check the browser path and user data directory to ensure they are correct.
Check for browser updates to ensure you are running the latest version.
Disable browser extensions to see if any of them are causing the issue.
Reset browser settings to their default values.
Check for firewall or antivirus issues that may be blocking the browser instance.

Q: Can I use my own browser instance with WebUI on a Mac or Linux system?

A: Yes, you can use your own browser instance with WebUI on a Mac or Linux system. However, you will need to use a different browser executable and configure the CDP settings accordingly.

Q: How do I optimize performance when using my own browser instance with WebUI?

A: To optimize performance when using your own browser instance with WebUI, follow these steps:

Use a fast browser executable, such as the Edge browser.
Disable unnecessary browser extensions.
Use a high-performance graphics card.
Adjust the CDP settings to optimize performance.

Q: Can I use my own browser instance with WebUI for automation tasks?

A: Yes, you can use your own browser instance with WebUI for automation tasks. WebUI supports a wide range of automation tasks, including:

Web scraping
Form filling
Button clicking
Image recognition

Conclusion

Using your own browser instance with WebUI can be a powerful way to automate web interactions. By following the steps outlined in this article, you should be able to set up and troubleshoot your own browser instance with WebUI. If you have any further questions or concerns, please don't hesitate to reach out to us.

Additional Resources

For more information on using your own browser instance with WebUI, please refer to the following resources: